1 files changed, 14 insertions, 68 deletions

diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index ff0235391285..31ebfe38e96c 100644
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -24,41 +24,6 @@
 #include <asm/i8259.h>
 
 /*
- * Common place to define all x86 IRQ vectors
- *
- * This builds up the IRQ handler stubs using some ugly macros in irq.h
- *
- * These macros create the low-level assembly IRQ routines that save
- * register context and call do_IRQ(). do_IRQ() then does all the
- * operations that are needed to keep the AT (or SMP IOAPIC)
- * interrupt-controller happy.
- */
-
-#define IRQ_NAME2(nr) nr##_interrupt(void)
-#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
-
-/*
- *      SMP has a few special interrupts for IPI messages
- */
-
-#define BUILD_IRQ(nr)                           \
-        asmlinkage void IRQ_NAME(nr);           \
-        asm("\n.text\n.p2align\n"               \
-            "IRQ" #nr "_interrupt:\n\t"         \
-            "push $~(" #nr ") ; "               \
-            "jmp common_interrupt\n"            \
-            ".previous");
-
-#define BI(x,y) \
-        BUILD_IRQ(x##y)
-
-#define BUILD_16_IRQS(x) \
-        BI(x,0) BI(x,1) BI(x,2) BI(x,3) \
-        BI(x,4) BI(x,5) BI(x,6) BI(x,7) \
-        BI(x,8) BI(x,9) BI(x,a) BI(x,b) \
-        BI(x,c) BI(x,d) BI(x,e) BI(x,f)
-
-/*
  * ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts:
  * (these are usually mapped to vectors 0x30-0x3f)
  */
@@ -73,37 +38,6 @@
  *
  * (these are usually mapped into the 0x30-0xff vector range)
  */
-                                      BUILD_16_IRQS(0x2) BUILD_16_IRQS(0x3)
-BUILD_16_IRQS(0x4) BUILD_16_IRQS(0x5) BUILD_16_IRQS(0x6) BUILD_16_IRQS(0x7)
-BUILD_16_IRQS(0x8) BUILD_16_IRQS(0x9) BUILD_16_IRQS(0xa) BUILD_16_IRQS(0xb)
-BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd) BUILD_16_IRQS(0xe) BUILD_16_IRQS(0xf)
-
-#undef BUILD_16_IRQS
-#undef BI
-
-
-#define IRQ(x,y) \
-        IRQ##x##y##_interrupt
-
-#define IRQLIST_16(x) \
-        IRQ(x,0), IRQ(x,1), IRQ(x,2), IRQ(x,3), \
-        IRQ(x,4), IRQ(x,5), IRQ(x,6), IRQ(x,7), \
-        IRQ(x,8), IRQ(x,9), IRQ(x,a), IRQ(x,b), \
-        IRQ(x,c), IRQ(x,d), IRQ(x,e), IRQ(x,f)
-
-/* for the irq vectors */
-static void (*__initdata interrupt[NR_VECTORS - FIRST_EXTERNAL_VECTOR])(void) = {
-                                          IRQLIST_16(0x2), IRQLIST_16(0x3),
-        IRQLIST_16(0x4), IRQLIST_16(0x5), IRQLIST_16(0x6), IRQLIST_16(0x7),
-        IRQLIST_16(0x8), IRQLIST_16(0x9), IRQLIST_16(0xa), IRQLIST_16(0xb),
-        IRQLIST_16(0xc), IRQLIST_16(0xd), IRQLIST_16(0xe), IRQLIST_16(0xf)
-};
-
-#undef IRQ
-#undef IRQLIST_16
-
-
-
 
 /*
  * IRQ2 is cascade interrupt to second interrupt controller
@@ -135,6 +69,18 @@ DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
         [IRQ15_VECTOR + 1 ... NR_VECTORS - 1] = -1
 };
 
+int vector_used_by_percpu_irq(unsigned int vector)
+{
+        int cpu;
+
+        for_each_online_cpu(cpu) {
+                if (per_cpu(vector_irq, cpu)[vector] != -1)
+                        return 1;
+        }
+
+        return 0;
+}
+
 void __init init_ISA_irqs(void)
 {
         int i;
@@ -142,8 +88,7 @@ void __init init_ISA_irqs(void)
         init_bsp_APIC();
         init_8259A(0);
 
-        for (i = 0; i < 16; i++) {
-                /* first time call this irq_desc */
+        for (i = 0; i < NR_IRQS_LEGACY; i++) {
                 struct irq_desc *desc = irq_to_desc(i);
 
                 desc->status = IRQ_DISABLED;
@@ -188,6 +133,7 @@ static void __init smp_intr_init(void)
 
         /* Low priority IPI to cleanup after moving an irq */
         set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);
+        set_bit(IRQ_MOVE_CLEANUP_VECTOR, used_vectors);
 #endif
 }